Calibration apparatus

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United States of America Patent

PATENT NO 9539835
APP PUB NO 20140149068A1
SERIAL NO

13688551

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A calibration apparatus is disclosed herein. An example includes a printing mechanism, a media control mechanism, a sensor, and a processor. The processor controls the printing mechanism to print a first pattern of first elements on a print medium and a second pattern of second elements on the print medium that are interleaved with the first elements. The processor also actuates the media control mechanism to advance the print medium, determines a centroid of at least one of the first elements based on a first measured reflectance by the sensor, and determines a centroid of at least one of the second elements based on a second measured reflectance by the sensor. The processor also determines a print medium advance error based on the at least one determined centroid of the first elements and the at least one determined centroid of the interleaved second elements.

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Patent Owner(s)

  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kinas, Erick Blane Camas, US 4 3

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